Russell Brand may have a bit of a reputation, but the British bad boy insists he's been on his best behavior.

The 38-year-old funnyman was seen walking rumored girlfriend Jemima Khan's dog on Sunday, Nov. 17 in London, where he was photographed looking relaxed and content as he strolled the streets in a pair of tight black jeans, a sheepskin jacket and a blue and red color-block scarf.

Despite the comedian's relaxed demeanor, Brand, who only recently revealed that he is "in a relationship" has come under fire after model Sophie Coady opened up about her alleged fling with Brand in an interview with The Sun, published on Sunday, Nov. 17, in which she claimed that she and Brand, who first met in August 2013, continued to see each other after the funnyman was romantically linked to Khan.

Coady's allegation's come just after Katy Perry's ex told Alan Carr, "After the show I musn't go drilling my way through the townsfolk. I'm in love, so I'm behaving myself."

And he also took to Twitter to slam the Sun report.

"Total lies in about me in today's Sun from the paper that dishonoured the tragic dead at Hillsborough and desecrate the dead themselves," he wrote.

Later that day, the Get Him to the Greek star was the perfect image of a doting boyfriend, asking his taxi driver to stop and buy a bouquet of flowers while en route to an address in London. The comedian was later seen clutching the flowers when he exited the taxi with his furry friend, presumably to see his ladylove.

While Brand has yet to publicly confirm the identity of his girlfriend, Khan recently tweeted a photo of the radio host posing with her white Husky dog just two days after Brand revealed that he's indeed off the market.

The pair was first romantically linked in mid-September, although Brand admitted that he was single just 15 days after boasting he was "eschewing all others" to be with the European editor-at-large of Vanity Fair.